Exerciser



FIG. 1 is a perspective view of an exerciser, showing our new design;

FIG. 2 is a left elevational view thereof;

FIG. 3 is a right elevational view thereof

FIG. 4 is a rear elevational view thereof;

FIG. 5 is a front elevational view thereof;

FIG. 6 is a top plan view thereof; and,

FIG. 7 is a bottom plan view thereof. 

The ornamental design for an exerciser, as shown. 